Metal production by electrolysis of a molten electrolyte

Details Metal production by electrolysis of a molten electrolyte Metal production by electrolysis of a molten electrolyte

1983-07-13

1985-04-30

Hearn, Brian E.

Chemistry: electrical and wave energy

Processes and products

204 70, 204243R, 204270, 204256, C25C 302, C25C 304

Patent

active

045142696

ABSTRACT:
A cell for producing magnesium or other metal by electrolysis of molten chloride or other electrolyte comprises at least one electrode assembly of an anode 24, at least one intermediate bipolar electrode 28, 30, 32, 34 and a cathode 26 defining generally vertical interelectrode spaces between them. To minimize current leakage, the intermediate bipolar electrodes preferably almost completely surround the anode including the edges and the bottom.
In operation, a metal/electrolyte mixture is swept up the interelectrode spaces by generated chlorine gas and spills out over the cathode into a duct 20 behind the cathode, the duct including a restricted passage 58 for degassing and an inverted channel 62 to collect product metal and convey it to a metal collection chamber 18.
The electrolyte surface is preferably maintained to about the level of the top edges of the intermediate bipolar electrodes by means of a level control device 22 submerged in electrolyte in the metal collection chamber.

REFERENCES:
patent: 3907651 (1975-09-01), Andreassen et al.
patent: 4334975 (1982-06-01), Ishizuka

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